125685553823 has 16 divisors (see below), whose sum is σ = 128690263296. Its totient is φ = 122719914240.

The previous prime is 125685553801. The next prime is 125685553837. The reversal of 125685553823 is 328355586521.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 125685553823 - 2⁶ = 125685553759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125085553823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5971388 + ... + 5992398.

It is an arithmetic number, because the mean of its divisors is an integer number (8043141456).

Almost surely, 2^125685553823 is an apocalyptic number.

125685553823 is a deficient number, since it is larger than the sum of its proper divisors (3004709473).

125685553823 is an equidigital number, since it uses as much as digits as its factorization.

125685553823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21934.

The product of its digits is 8640000, while the sum is 53.

The spelling of 125685553823 in words is "one hundred twenty-five billion, six hundred eighty-five million, five hundred fifty-three thousand, eight hundred twenty-three".